Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Core Chip | STC89C52RC / AT89S52 Compatible |
| Operating Voltage | 5V DC |
| Clock Frequency | 11.0592 MHz Crystal Oscillator |
| Program Memory | 8KB Flash ROM |
| Data Memory | 256 Bytes RAM |
| I/O Ports | 32 Programmable I/O Lines (P0-P3) |
| Interface Type | DB9 Serial Port / USB-to-TTL Header |
| Board Dimensions | 75mm x 55mm x 15mm |
| Reset Method | Manual Push-Button Reset Circuit |
| Package Contents | 1x Main Board, 1x USB Cable, Discrete Components Kit |
Anonymous
Mar 28, 2026
Rating: 5/5
Nostalgic and functional
Brings me back to my college days. The 11.0592MHz crystal ensures accurate baud rates for serial communication, which is often a pain point on cheaper clones. The layout is logical and easy to probe with an oscilloscope.
Anonymous
Mar 21, 2026
Rating: 4/5
Solid hardware, basic software support
The hardware quality is surprising for the price. All pins are broken out correctly. You will need to find your own IDE and compiler (like Keil or SDCC), as no software is included, but that is standard for this type of board.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable minimal system
No frills, just a working 51 microcontroller board. The reset button is responsive, and the power LED indicates status clearly. I used it to build a custom temperature logger and it performed flawlessly for weeks.
Anonymous
Mar 14, 2026
Rating: 5/5
Perfect for beginners learning assembly
This board is exactly what I needed to start learning 8051 architecture. The discrete parts allow you to see every component clearly, which helps in understanding the circuit design. Documentation was clear and the serial communication worked immediately.
Anonymous
Mar 02, 2026
Rating: 4/5
Great value but requires soldering knowledge
Excellent price point for a development kit. Note that some versions come as a kit requiring you to solder the discrete components yourself, which is great for learning but might be tricky for absolute novices. Once assembled, it runs stable code perfectly.
Anonymous
Mar 01, 2026
Rating: 5/5
Ideal for university labs
I purchased ten of these for my embedded systems course. They are robust enough to handle student errors and the minimal system design prevents confusion with unnecessary peripherals. Highly recommended for educational purposes.
Q: Can I power this board directly via USB?
A: Yes, if you are using a USB-to-TTL cable that provides 5V VCC output, you can power the board directly through the header pins. Alternatively, you can use a separate 5V DC power supply connected to the designated power pins. Do not exceed 5.5V to avoid damaging the chip.
Q: Is the crystal oscillator frequency changeable?
A: The board comes populated with an 11.0592MHz crystal, which is ideal for precise serial communication baud rates. While it is possible to desolder it and replace it with a different frequency (e.g., 12MHz), doing so requires soldering skills and will affect timing-dependent operations like UART.
Q: Does this board come pre-assembled or do I need to solder the parts?
A: This specific listing is for the 'Discrete Parts' version, which means it typically arrives as a kit requiring you to solder the components onto the PCB. This is designed to help learners understand the schematic and assembly process. Pre-assembled options may be available in other listings.
Q: Are there example codes included with the purchase?
A: Physical media is not included, but we provide a download link in the user manual (or on our product page) containing sample code in both C and Assembly. These examples cover GPIO toggling, timer interrupts, and serial communication to get you started quickly.
Q: What software do I need to program this microcontroller?
A: You can use popular compilers such as Keil C51, SDCC (open source), or ASM51 for assembly language. You will also need a programmer/downloader; this board usually supports standard serial downloading via a USB-to-TTL adapter if the boot loader is installed, or an external STC ISP programmer.
Premium Factory Price Low-Temp 3D Printing Pen (2-Pack) - Compatible with PCL Filament
$67.91
Music Theory Book Jazz Theory Introduction Volume 1 Jazz Teaching Theoretical Knowledge Basic Textbook Tutorial HD Electronic Version
$5.00
Extra-Large Transparent Plastic Storage Box with Lid, Home Organizer for Clothes and Household Items
$4.80
Baijiali Artistic Eyebrow Hair Transplant: Bilateral Filling for Sparse Areas, Dense and Natural-Looking Results
$7,800.00
Plastic U-Shaped Trough Mold for Yam Cultivation, Directional Shallow Growth Slots (100 Pieces, Free Shipping)
$31.40
Maikeku Commercial Slow Juicer, Large Pulp-Separating Juice Extractor with High Power, Wide Mouth, Fully Automatic for Street Vending
$7,456.32
Continental CSC5 Tire 245/50R18 104V MO-V for Mercedes-Benz Viano, Vito, V260
$882.00
English Vocabulary Flashcards for Classroom Teaching - Categories Include Weather, Days, Months, Clothing, Home, Seasons, Fruits, Food, and Professions
$8.42
Cabinet Storage Box, Foldable Rattan-Style Basket for Countertop Snacks, Clothes, and Toys
$19.90
Custom PVC Sign Letters, Advertising Signs, Branding Wall Characters, Snowflake Board, Acrylic Crystal Letters for Background Walls
$5.00
Specialized Vegetable Growing Box - Foam Balcony Planter, Rectangular Plastic Pot for Home Gardening
$41.70
Fully Protected Smart Battery Tester - Performance Detector for Electric Vehicle and Car Batteries
$286.00
Large-Diameter Steel Corrugated Drainage Pipe for Bridge Culverts
$61.11
Water Curtain Paint Booth - 3-Meter Spray Station with Water Circulation for Paint Mist Purification, Eco-Friendly Dust Removal, 1-Meter Small Water Curtain Cabinet
$1,980.00
Portable Cleaning and Storage Box for Elderly Dentures, Compact Case for Full-Set False Teeth Soaking and Storage
$32.22
RC Model A07 PNP FPV Analog/Digital Racing Drone 7-Inch Aerial Photography Quadcopter Frame
$1,643.00
ACCSOON SeeMo Monitor Converter for iPhone and iPad, Real-Time Monitoring and Live Streaming
$1,059.00
Solenoid Valve Initial Inspection Test Bench / Solenoid Valve Leakage Test Bench / Solenoid Valve Airtightness Test Bench
$7,482.00
Factory Direct Hardware Screw and Parts Automatic Weighing and Packaging Machine, Vertical Weighing and Packing Equipment
$36,860.00
Commercial Heated Beverage Cabinet, Small Countertop Display Warmer with Constant Temperature for Supermarkets
$1,099.00
Manufacturer Supply Standard Dual-Color Film Copy Paper Ink Water-Based Ink Gravure Printing Machine
$17,500.00
Gray Surface Pen for Sketching and Quick Drawing - Art Highlight Sketch Paper Blending Stump and Sponge Eraser Tool Set for Still Life, Geometry, and Portraits, Designed for Art Students and Exam Candidates, Complete Beginner Kit
$6.80
Extra-Large Denture Storage Box for Seniors, Food-Grade Portable Cleaning and Soaking Container for Full Dentures
$29.90
![[Sheet Music Collection for Teachers] Continuously Updated – HD, No Watermark, Includes Tutorial Videos](https://www.gosteppe.com/cache/small/product/270366/legacy-main-31b5e0667fb30a4c5628abbc.webp)
[Sheet Music Collection for Teachers] Continuously Updated – HD, No Watermark, Includes Tutorial Videos
$49.90
Orthodontic Retainer Case for Invisible Braces, Portable Storage and Cleaning Box for Teeth Aligners and Dentures
$23.10
Portable Retainer Case for Braces, Orthodontic Clear Aligner Storage Box with Chewie and Removal Tool
$3.98
Freestanding Multi-Tier Toilet Storage Rack for Bathroom, Laundry, and Balcony Organization
$174.00
Biliansheng Hair Transplant and Care - Herbal Hair Nourishment Treatment Package
$480.00
Traditional Wooden Rattle Drum with Sheepskin Head for Babies - Chewable Handheld Toy with Fortune Zodiac Design
$11.90
2026 Spring New FLTRP Grade 3 English Vocabulary & Sentence Flashcards for Classroom Teaching
$8.42
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
